"After an outbreak in North Korea of the highly contagious, African swine fever, South Korea's the north. Ignoring its calls for joint efforts to stem the spread South Korea's agricultural ministries has blood tests of pigs from a few hundred farms near the inter-korean border conducted through Tuesday came back negative hundreds of fences and traps have been installed around the farms to prevent their pigs from contacting wild boars that Rome in and out of North Korea. Seoul says the north hasn't responded to proposals for joint quarantine"